Automatic oiler.



No. 8 65857. PATBNTED SEPT. 3, 1907.

A. P. OLSON.

AUTOMATIG OILER. APPLIOATION Hmm :nm-1. 1907.

2 SHBETS-SHEET 1.

J VENT IIIIIIEIIIIIIIIIIIIIIII 7 /////////////////l No. 864,857. PATENTBD SEPT. 3, 1907.

A. P. OLSON. AUTOMATIC'OILER.

APPLIOATIOR Hmm JAN;11. 1907.

2 SHEETS-SEBET 2.

N fo W PATENT OFFICE.

ANDREW P. OLSON, ORCHIOAGO, ILLINOIS.

.AUTOMATIC OILER.

No. &64,857.

To all whom 'it may concem:

Be it known that I, ANDREW P. OLsoN of Chicago, in the State of Illinois, have invented certain'new and useful Improvements in Automatic Oilers, of which the following is a s pecification.

My inventin relates to improvements in oilers in which an oil reservoir is used in conjunction with a pump arranged to be worked by the machine to be oiled so as to automatically feed the oil to the machine as required to keep it properly lubricated; and the objects of my improvements are, first, to provide a more simple and efiicient Construction than any now known tome .I for the purpose; second, to afiord facilities forobserving the passage of the oil from the duct leading from the reservoir to the machine to be oiled; and, third, to provide a form of device whose parts may be Conveniently multiplied so as to be adapted to a compact system comprising several pumps with ducts leading to various parts of the machine to be oiled, all being worked by the same shaft or Operating device. I attain these objects by the mechanism llustrated in the accompanying drawings in which Figure l is a sectional plan view of a device of the class mentioned containing my improvements with pump-cylinders shown in duplicate and reservoir in section. Fig. 2 shows in fragment a vertical longitudinal section through the reservoir and one of the pump cylinders. Fig. 3 is a fragmentary detail showing a top View of two connected cylinders separated from the reservoir. Fg. 4 is a detail showing a section on the line 4 4 of Fig. 2.

In the several views of the drawing the same reference numerals indicate the same parts.

The numeral 5 designates an oil reservoir whichpreferably consists of an elongated box, tube or other vessellike structure adapted to hold a suitable bricating oil.

Numeral 6 is a tube or'hollow cylinder-like structure which is adapted to lie upon the bottom of the reservoir and to be secured in place therein by any convenient means. A piston-rod 7 is extended through the cylinders and works in suitable bearngs or openings in stoppieces 7 fixed in said cylinder or cylinders. Portions of said cylinders at 6* 6* over the stop-pieces are cut supply of lu- .away as shown in Figs. 1, 3 and 4, and the pump-pis tons, arranged in the cylinders on opposite sides of the cut-away portions, are shown in duplicate. The piston 8 is loose upon the piston-rod and is pressed by a spring 8 so as to slide upon the rod in the direction from the stop-pieces and to permit it to slide in the other direction when the spring pressure is overcome. Stop-piss a (Fig. 3) prevent its movement backward too far. The spring pressure is regulated by means of a wedge-like yoke 8' interposed between the stop-piece 7 and the spring and attached to a thumb rod 8' threaded in the Specfication of Letters Patent.

Application filed January 11,1907. Serial No. 351,796.

Patented Sept. 3, 1907.

top of the reservoir so that the wedge can be inserted more or less, as desired for this purpose.

A piston 9 is fixed to the rod by a set screw 9 so as to move therewith. Over the piston 9 the cylinder is cut away to form a slot 9 preferably extending' down to the aXis of the piston rod, and serving as an intake port to admit oil from the reservoir into the cylinder between the pistons 8 and 9. A small duct 10 communicating with the interior of the cylinder and extending out through the top or cover of the reservoir, is provided for carrying the oil out to a point where it is to be delivered, by the working of the pistons 8 and 9 as presently to be eXplained.

In the present instance a third piston ll, opposite to piston 8 from piston 9, is provided and mounted loosely so as to slide upon the rod toward the piston 9 under the pressure of a spring 11 and the oil duct 10 delivers the oil to a duct 10 which communicates with the cylinder at a point between the pistons 9 and ll. An air vent 12 is provided for admitti'ng air to the space between said pistons 9 and 11 when they are being moved apart. Said vent has a check valve 12* for automatically losing it at other times. A duct 10 communicates with the cylinder at the bottom, at a point over which the piston ll works, and it carries the oil, which has been delivered into the cylinder in the open space between said pistons 9 and ll, to the place where it is to be used. The space between the downwardly turned end of the duct 10 and the funnel-shaped upper end of the duct 10 as here shown is inclosed within a glass cup 10 through which the passage of the oil from duct 10 to duct 10 may be observed at this point. This is a convenient Construction for cases in which it 'may be thought desirable to make the oil-feed visible. In' other casesthe pistons 8 and 9 in co'njunction with the duct 10 extended to the place where the lubricant is to be applie'd will be sufficient to do the required work without the use of the third piston ll.

.To relieve possible inward pressure upon pistons 8 and 9 when being separated a small hole may bemade in the cylinders at c and provided with`an automatic check valve arranged to open when the pressure is inward and to close when it is outward.

The bottom of the reservoir is provided with a bracket 13 in which a crank shaft 13 is journaled. This is connected by a pitman 13 with the piston-rod or rods. The crank shaft is provided with a large cog wheel 14 geared to a small pinion 14 mounted on a shaft 14 extending out of the reservoir through a stuffing-box journal bearing and by this means a slow reciprocating movement of the piston-rod and pistons fixed thereto may be produced. V

The apparatus containing the invention comprises an oil reservoir having a vent near the top for admitting air over the oil. as it is drawn off, a cylinder (one or more) iixed to the reservoir and communicuting therewith through intake ports so :s to receive oil therefrom, a dut-t or ducts communicating with the cylinder through an output port and leading to the place or places where the lubricunt is to be applied, a pistenrod adapted to work within the cylinder a fixed pisten und one or more loose spring-pressed pistons mounted on the piston-rod and means ior importing to the pistenrod a reciprocating movement. The position of the port or intake of oil from the reservoir to the cylinder and oi the output ironi the cylinder to the outgoing duct or ducts relutively to the pistons and their reciprocations, is such that the intake port 01' ports can be closed ut or about the time of the opening of the output port, so that a regular charge oi oil shall be taken and delivered at each return movement.

The operation is as iollows: Assuming the oiler to be connected by the oil duet with the machine to be oiled and having belt connection with the large pulley (Fig. 1) mounted on the outer end of shaft 14 the operation oi the machine will import o slow reciprocative movement to the pisten-red, or rods, and the pisten or pistons 9 which are fixed rigidly thereon. The movement ol the fixed pisten E) away from the loose pisten S is sufiicient to clear or open the intake port 9 and allow oil from the reservoir to enter the cylinder between said pistons 8 and 9. With this movement the spring 8 is brought into action which causes pisten 8 to follow after pisten 9 and close the output port leading to the duet 10 and further on toward the intake port 9 far as required to take in the desired charge of oil, the spring pressure having been adjusted and set with a view to regulate this movement, oi pisten 8 to suit the result required in the given ease. The return movement of the fixed pisten toward the piston S will throw out through the intake port any exeess of oil over the required eharge before elosing said port, and thereaiter will compress the charge upon the pisten 8 and orce it back sufiiciently to open the port leading to duet 10 and out through the same to :tny system oi ducts which muy be connected therewith. The stop-pins a check the backward movement oi pisten 8 as soon as the output port is iully open so that the pisten 9 can come up close and force out the full eharge of oil held in between said pistons. v

In using the visible feed the charge taken from the reservoir and passed out through the duet 10 is returned to the cylinder at the opposite side of pisten 9 through the duet 1,0 and held by the piston ll., and the action of the pisten 9 relutively to pisten 11 is similar to that described with reference to pisten 8, first closing the port leading ironi the duct 10, it compresses the oil upon the pisten ll and forces it back until the port of 10 is open and then it forces the charge out there. The

vent 12 admits air between pistons 9 and 11 when they part, and the spring 11' cuuses the pisten 11 to move back over and close the portat 10 It is contemplated thot the cylinder and pisten rod may be extended to any desired length and that the sets oi pistons can be nultiplied and provided with ducts and regulators so as to make a series of adjustable pumps all operuted by the single pisten rod, each duet for supplying oil to :i different; journal or hearing of a machine having gear or belt connection adapted to work the piston rod in the manner shown and described.

What is claimed is:

14 in un apparurus oi the chss described, :i punp comprisig a cylinde' with an intake port and an oulput'port, :i pisten rodadapted to work within the cylinder, :i springpressed pisten mounted loosely upon the pisten-red and working toope and close the output port, and a pisten nounted rigidiy upon the piston rod and working to open and close the iuizike port.

2. In un apparatus of the class described, a series of puiup eyiinders, each having an intake port and an output port', a pisten-red extended throughout the cylinders, spring-pressed pistons, respeetively, mounted loosely upon the pistonq'od within the cylinders, and working in con junctio with the output ports, and pistons respectively mounted rigidly upon the pisten rod within the cylinders and working in conjunction with the intake ports.

I. In an zippurutus of the class described, a pump conip-ising a cyiinder provided with an air vent and two intake port s and two out-put ports, a pisten-red adapted to work within the cylinder, two spring-pressed pistons mount ed looseiy upon the pisten-red to work in conjunction with the output ports, and a pisten mounted -igidly upon the piston rod between the Iooseiy-mountcd pistons to work in eonjunction with the intiike and the output ports.

i. In :n apparatus of the class described, :i pump comprising' a cylinder with :n intuke port, an output port, a stop in conjuction with the output poi-t, a pisten-red adupted to work within the cylinder, a sprinpressed pisten mounred loosely upon the pisten-red and :dzpted to work in coijunetion with the output port and stop, and u fixed pisten mounted rigidly upon the pisten-red and udapted to work in conjunction with the intake port and looselydnouuted pisten.

5. in an uppdratus of the class described, :r punp comprising a cylinder provided with an intake port and au out-put port, a pisten 'od adapted to work within the cylinder, a sp'ing-pressed pisten mounted loosely upon the pisten-red and a pisten mounted rigidly upon the pisten-red both of said pistons being adapted to work in conjunction with the intake port for measuring the charge taken.

o. In un appurntus of the class described, u pump comprising a cyiinder provided with :in intuke port und an output port, a pisten rod within the cyliuder, a springpressed pisten loosely mounted upon the piston rod and a pisten rigidly mounted upon the pisten-red and menus for regulating the spring-pressu'e upon the loosely ounted spring-pressed pisten.

AN DREW 1'. OLSON.

witnesses ANNA E. KMIN,

RAY Emasson. 

